The purpose of this project is to investigate the relationship between the voltage loss across several resistors and the current flowing through there. I have to also determine from my data an equation describing this relationship and measure the Electrical Resistance that is measured in Ohms.
Set up .
For this lab, you will need:.
• 3 Resistors connecting wires.
• 1 Breadboard.
• 1 Voltmeter.
• 1 power supply (breadboard).
• 1 Ammeter.
Here is a schematic diagram of the lab:.
Procedure.
1) Set the voltage of the knob to 0 volts in a clockwise direction.
2) Now, connect the resistor to the breadboard. Do not turn the power on yet. .
3) With an alligator wire, connect the power supply with the lower post of the ammeter.
4) With an alligator clip, connect the positive side of the power supply to the positive terminal of the ammeter. After that, connect the black terminal of the ammeter to the top post of the resistor bracket. This will complete the circuit but, still, do not turn the power on. Now, set the ammeter to its highest reading scale.
5) Now using alligator clips, connect the positive voltmeter terminal to the top resistor post and the negative probe to the bottom resistor post. All of this will connect the voltmeter in a parallel branch circuit across the resistor. This will tell you how many volts are lost during the whole process. Set the Voltmeter to 10 VDC. .
6) Check all your connections and system otherwise, something could be wrong and ruin he whole experiment, the voltmeter, and the ammeter.
7) DO tables to record all your data since we are going to have four trials. One at its maximum current, one at 23 and the last one about 1/3.
8) DO all of these four trials and do not stay the circuit turned on because everything can come overheated and all the equipment could ruin so do it fast and accurately.
10) After you do all of these trials, do a graph and calculate the slopes for every trial.
